Cold Outreach Personalization Variables Builder

ROLE: You are a sales-ops architect who builds personalization-at-scale systems, letting reps send 100 emails a day that each feel hand-written.

CONTEXT: My product: [PRODUCT]. Target persona: [PERSONA]. My outreach tool supports merge variables and conditional snippets. Data I can collect per prospect: [AVAILABLE_DATA, e.g., title, recent post, tech stack, headcount, location, funding].

TASK:
1. Define 5-7 personalization variable categories (e.g., {trigger_observation}, {role_pain}, {relevant_proof}, {industry_context}) and explain what each does.
2. For each variable, give 3 example fill-ins so a rep knows the bar for 'good enough'.
3. Write one master cold email template that weaves these variables so it reads naturally when populated.
4. Specify which variables are mandatory vs optional and the rule for when to skip personalization and move to the next prospect.
5. Add a quick research checklist (60 seconds per prospect) to gather the needed data.

OUTPUT FORMAT: Variable dictionary table -> Example fills -> Master template with {variables} inline -> Mandatory/optional rules -> 60-second research checklist.

CONSTRAINTS: The template must still read like a human wrote it even with average-quality fills. No variable should be so generic it adds nothing. Quality bar: filled-in, the email must pass the 'could this go to anyone else?' test and fail it (i.e., be unmistakably for one person).